See also:
Best VGM 18 - http://youtube.com/watch?v=bdNrjSswl78&fmt=18
Best VGM 287 - http://www.youtube.com/watch?v=EX5V_PWI3yM
A collection of my favorite videogame music. Note that most of them are from games I played so I might miss some great ones from games I never played.
Playstation 2
Kingdom Hearts II (2006)
Darkness of the Unknown
Yoko Shimomura